Duplexer
AssigneeSamsung Electronics Co., Ltd.
InventorsYun-kwon Park, Sang-chul Sul, In-sang Song, Chul-soo Kim, Seok-chul Yun, Kuang-woo Nam
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Abstract
A duplexer is provided. The duplexer includes a first band pass filter (BPF) coupled to a first signal port and a second signal port; and a second BPF coupled to the first signal port and a third signal port, each of the first BPF and the second BPF including a first resonance circuit which comprises a plurality of first resonators coupled in series; a second resonance circuit which comprises a plurality of second resonators coupled in series; and a third resonance circuit which comprises a plurality of third resonators coupled in parallel and formed in divided lines coupling the first and second resonance circuits.
Claims20
A duplexer comprising:
- a first band pass filter (BPF) coupled to a first signal port and a second signal port;
- and
- a second BPF coupled to the first signal port and a third signal port,
- each of the first BPF and the second BPF comprising:
- a first resonance circuit which comprises a plurality of first resonators coupled in series;
- a second resonance circuit which comprises a plurality of second resonators coupled in series;
- and
- a third resonance circuit which comprises a plurality of third resonators coupled in parallel and formed in divided lines coupling the first and second resonance circuits.
A duplexer comprising:
- a first band pass filter (BPF) which is coupled to a first signal port and a second signal port;
- and
- a second BPF which is coupled to the first signal port and a third signal port,
- wherein a frequency band of a signal passed by the first BPF is suppressed by the second BPF without using a phase shifter.
Dependencies are inferred from the claim text.